Malicious PDF — malware analysis report

Static analysis result for SHA-256 b42271383ef4dc3c…

MALICIOUS

PDF

40.0 KB Created: 2020-04-07 12:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4a60ca58a39d22defc36e1b13a8240f9 SHA-1: 5eceec36c61273ce47c147de95500fbd409d65d5 SHA-256: b42271383ef4dc3cd1886ef0f420c054cc957c1c2021e1f7f7d736eea078f578
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, a common tactic for SEO poisoning or driving traffic to malicious sites. The document body, though partially corrupted, contains a medical-related title suggesting a lure. The heuristic firings confirm the presence of a link farm and external URIs, indicating the primary purpose is to redirect users to potentially harmful content hosted on domains like menstrualmagic.com and silverspume.com.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://menstrualmagic.com/uploads/1/3/0/4/130436519/130436519.html#closed+fracture+of+base+of+fifth+metatarsal+bone+icd+10
    • http://silverspume.com/uploads/1/3/0/2/130291040/tujadajamoliji.pdf
    • http://vivavocestyling.com/uploads/1/3/0/3/130323190/1168505.pdf
    • http://poolwell.com/uploads/1/3/0/9/130969357/2342400.pdf
    • http://estlife.eu/uploads/1/3/0/5/130538925/wivodoraru.pdf
    • http://internationalcollege.info/uploads/1/3/1/4/131408178/vatogijod.pdf
    • http://ncaop.org/uploads/1/3/0/7/130739258/3309010.pdf
    • http://immaginel.sulimani.ch/uploads/1/3/1/4/131437532/8969415.pdf
    • http://pharmaloq.net/uploads/1/3/1/4/131453111/rakide_mifigiwidig_gixoruk.pdf
    • http://ringsbyvia.com/uploads/1/3/0/8/130814176/8044420.pdf
    • http://midhudsoncpr.com/uploads/1/3/0/5/130589217/kavizinexo-nupopimox-wuwevakisaxedo-nabexipelaweb.pdf
    • http://emilycass.studio/uploads/1/3/0/6/130621908/jefuxuderosage.pdf
    • http://snohomishchristmastrees.com/uploads/1/3/0/2/130289380/2776122.pdf
    • http://nuovaedilart.it/uploads/1/3/0/4/130483842/nowisemaxosi_zigojaratodod_fakatefiwiler.pdf
    • http://newlifeeastla.com/uploads/1/3/0/6/130604983/vomodozis_fopin_mupaxotomesaju_nomezi.pdf
    • http://felicecasa.com/uploads/1/3/0/7/130776001/gukigijofijupe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070df.bin
19e50a7743b4b8021612893dc98d558bfbef8637ded8cfdbaff3101528fc4b37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DF 8228 bytes

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